Gas water heater control method, device, controller and gas water heater

Abstract

The present application relates to a gas water heater control method, device, controller and gas water heater. The method comprises: obtaining the preset outlet water temperature, inlet water temperature and actual inlet water flow rate of the gas water heater, as well as the minimum heat load or the minimum hot water production; determining the required value of the minimum water flow rate according to the preset outlet water temperature and inlet water temperature, as well as the minimum heat load or the minimum hot water production; the required value of the minimum water flow rate is used to characterize the required value of the minimum water flow rate that meets the preset outlet water temperature under the minimum heat load or the minimum hot water production; when the actual inlet water flow rate is greater than or equal to the required value of the minimum water flow rate, controlling the combustion device of the gas water heater to work. The use of this method can meet the water needs of users in different scenarios.

Description

Technical Field

[0001] The present application relates to the technical field of water heaters, and in particular to a gas water heater control method, device, controller, computer storage medium and gas water heater. Background Art

[0002] Gas water heaters use gas as fuel and generate heat through combustion to heat cold water. Gas water heaters have been developed for many years and have the advantages of easy installation and good safety, so they are widely used in bathrooms, kitchens and other scenes where hot water is needed.

[0003] At present, the water flow rate is mostly used as the criterion for determining whether the combustion device of a gas water heater is turned on. However, relying solely on the water flow rate as the criterion for determining whether combustion is in progress cannot meet the actual needs of users in different water use scenarios. Summary of the invention

[0004] Based on this, it is necessary to provide a gas water heater control method, device, controller, computer storage medium and gas water heater that can meet the needs of users in different water use scenarios in response to the above technical problems.

[0005] In a first aspect, a gas water heater control method is provided, the method comprising:

[0006] Obtain the preset water outlet temperature, water inlet temperature and actual water inlet flow rate of the gas water heater, as well as the minimum heat load or minimum hot water production;

[0007] Determine the required value of the minimum water flow rate according to the preset water outlet temperature and water inlet temperature, as well as the minimum heat load or the minimum hot water production; the required value of the minimum water flow rate is used to characterize the required value of the minimum water flow rate that meets the preset water outlet temperature under the minimum heat load or the minimum hot water production;

[0008] When the actual water inlet flow rate is greater than or equal to the required value of the minimum water flow rate, the combustion device of the gas water heater is controlled to operate.

[0009] In one embodiment, the method further comprises:

[0010] When the actual water inlet flow rate is less than the required value of the minimum water flow rate, the combustion device is controlled to stop working.

[0011] In one embodiment, the method further comprises:

[0012] Get the maximum heat load or maximum hot water production of the gas water heater;

[0013] The required value of the maximum water flow rate is determined according to the preset water outlet temperature and water inlet temperature, as well as the maximum heat load or the maximum hot water production; the required value of the maximum water flow rate is used to characterize the required value of the maximum water flow rate that meets the preset water outlet temperature under the maximum heat load;

[0014] When the actual water inlet flow rate is greater than or equal to the required value of the maximum water flow rate, the combustion device of the gas water heater is controlled to operate.

[0015] In one embodiment, the method further comprises:

[0016] When the actual water inlet flow rate is greater than or equal to the required value of the maximum water flow rate, an alarm signal is output to the display screen of the gas water heater, and the alarm signal is used to drive the display screen to display the alarm information.

[0017] In one embodiment, when the actual water inlet flow rate is greater than or equal to the required value of the maximum water flow rate, after the step of outputting an alarm signal to the display screen of the gas water heater, the method includes:

[0018] When the actual water inlet flow rate is less than the required value of the maximum water flow rate, a stop alarm signal is output to the display screen, and the stop alarm signal is used to drive the display screen to stop displaying the alarm information.

[0019] In one embodiment, the method further comprises:

[0020] When the combustion device is working, if the absolute value of the difference between the preset water outlet temperature and the water inlet temperature is less than the preset threshold, a prompt signal is output to the display screen of the gas water heater; the prompt signal is used to drive the display screen to display a prompt message for increasing the water inlet volume.

[0021] In a second aspect, a gas water heater control device is provided, the device comprising:

[0022] A data acquisition module, used to obtain the preset water outlet temperature, water inlet temperature and actual water inlet flow rate of the gas water heater, as well as the minimum heat load or minimum hot water production;

[0023] A determination module, used to determine a required value of a minimum water flow rate according to a preset water outlet temperature and water inlet temperature, as well as a minimum heat load or a minimum amount of hot water produced; the required value of the minimum water flow rate is used to characterize the required value of the minimum water flow rate that meets the preset water outlet temperature under the minimum heat load or the minimum amount of hot water produced;

[0024] The operation control module is used to control the operation of the combustion device of the gas water heater when the actual water inlet flow rate is greater than or equal to the required value of the minimum water flow rate.

[0025] In a third aspect, a controller is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0026] In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0027] In a fifth aspect, a gas water heater is provided, comprising:

[0028] A combustion device, wherein the water inlet end of the combustion device is connected to the water inlet pipe, and the water outlet end of the combustion device is connected to the water outlet pipe;

[0029] A water flow sensor is installed on the water inlet pipe. The water flow sensor is used to detect the actual water inlet flow;

[0030] The temperature sensor is installed in the water inlet pipe and is used to detect the inlet water temperature;

[0031] The controller includes a memory and a processor. The memory stores a computer program and a preset water outlet temperature. When the processor executes the computer program, the steps in the above method embodiments are implemented.

[0032] The above-mentioned gas water heater control method, device, controller, medium and gas water heater obtain the preset water outlet temperature, water inlet temperature and actual water inlet flow rate of the gas water heater, as well as the minimum heat load or the minimum hot water production, and determine the required value of the minimum water flow rate, and control the operation of the combustion device of the gas water heater when the actual water inlet flow rate is greater than or equal to the required value of the minimum water flow rate. The working state of the combustion device of the gas water heater is controlled based on the required value of the minimum water flow rate determined by multi-dimensional parameters, which can prevent scalding caused by excessively high water inlet temperature and prevent the inability to start the combustion device due to too low water inlet volume caused by too low water pressure, thereby meeting the needs of different water use scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 An application environment diagram of a gas water heater control method in an embodiment;

[0034] Figure 2 A schematic diagram of a flow chart of a gas water heater control method in one embodiment;

[0035] Figure 3 A schematic flow chart of a gas water heater control method in another embodiment;

[0036] Figure 4 A schematic diagram of a flow chart of a gas water heater control method in another embodiment;

[0037] Figure 5 A schematic flow chart of a gas water heater control method in yet another embodiment;

[0038] Figure 6 is a curve diagram showing the relationship between the inlet water temperature and the outlet water temperature when the required value of the minimum water flow rate is fixed in one embodiment;

[0039] Figure 7 A curve diagram showing the relationship between the inlet water temperature and the water flow rate when the outlet water temperature is fixed and the minimum heat load is set in one embodiment;

[0040] Figure 8 is a structural block diagram of a gas water heater control device in one embodiment;

[0041] Fig. 9 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0043] The gas water heater control method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. The controller 102 is connected to the water flow sensor 1042 and the temperature sensor 1044, and the combustion device 1046 in the gas water heater 104. The controller 102 obtains the pre-stored preset water outlet temperature, the water inlet temperature collected by the temperature sensor 1044, the actual water inlet flow collected by the water flow sensor 1042, and the minimum heat load or the minimum hot water production; the required value of the minimum water flow is determined according to the preset water outlet temperature and the water inlet temperature, as well as the minimum heat load or the minimum hot water production; the required value of the minimum water flow is used to characterize the required value of the minimum water flow that meets the preset water outlet temperature under the minimum heat load or the minimum hot water production; the controller 102 controls the combustion device 1046 of the gas water heater 104 to work and start heating when the actual water inlet flow is greater than or equal to the required value of the minimum water flow. The controller 102 can be integrated in the gas water heater 104.

[0044] In one embodiment, Figure 2 As shown, a gas water heater control method is provided, which is applied to Figure 1 The controller 102 in the example is used as an example to illustrate, and the following steps are included:

[0045] S202, obtaining a preset water outlet temperature, water inlet temperature and actual water inlet flow rate of the gas water heater, as well as a minimum heat load or a minimum hot water production amount.

[0046] Among them, the preset water outlet temperature refers to the set water outlet temperature of the gas water heater, specifically refers to the ideal water temperature that the user expects to achieve after the gas water heater is heated. For example, if the water temperature required by the user is 45°C, the preset water outlet temperature is 45°C. It should be noted that the preset water outlet temperature can be adaptively set according to user needs, and is not limited here. When the user adjusts the preset water outlet temperature through a knob, touch screen, etc. set on the gas water heater, the controller can obtain the latest preset water outlet temperature. The minimum heat load can refer to the minimum power of the combustion device of the gas water heater when it is working, which represents the minimum hot water production capacity of the gas water heater. Specifically, it is the ability of the gas water heater to produce a few liters of water that meets the above preset water outlet temperature per minute under a specific preset water outlet temperature and minimum power. It can be seen that the minimum heat load can also be replaced by the minimum hot water production that can be produced under the above conditions. For example, in a specific embodiment, the minimum power of the combustion device is 5kw, and the preset water outlet temperature is 45°C. At this time, the amount of water with a temperature of 45°C that can be produced per minute under the above conditions is 3L. Furthermore, each preset water outlet temperature has a corresponding minimum heat load, and the corresponding relationship varies due to the different component parameters used in the gas water heater. The manufacturer can configure it according to actual requirements and is not limited here.

[0047] Specifically, the preset outlet water temperature and minimum heat load of the gas water heater can be directly stored in the memory of the controller, and the controller can directly obtain it from the memory. The inlet water temperature is detected in real time by installing a temperature sensor and transmitted to the controller. Similarly, the actual inlet water flow rate can also be detected in real time by installing a water flow sensor and transmitted to the controller.

[0048] S204, determining the required value of the minimum water flow rate according to the preset water outlet temperature and water inlet temperature, as well as the minimum heat load or the minimum hot water production; the required value of the minimum water flow rate is used to characterize the required value of the minimum water flow rate that meets the preset water outlet temperature under the minimum heat load or the minimum hot water production.

[0049] The required value of the minimum water flow rate refers to the criterion for determining whether the combustion device of the gas water heater is properly started. It is specifically determined by the following calculation formula:

[0050] L min =Q min *25 / 2 / (T s -T in )

[0051] Among them, L min is the required value of minimum water flow, Q min is the minimum heat load, T s is the preset water outlet temperature, Tin is the inlet water temperature.

[0052] Or, when the minimum heat load is replaced by the minimum hot water production, it is:

[0053] L min =M min *25 / (T s -T in )

[0054] Among them, M min Minimum hot water production.

[0055] S206, when the actual water inlet flow rate is greater than or equal to the required value of the minimum water flow rate, controlling the combustion device of the gas water heater to operate.

[0056] The operation of the combustion device may refer to the process of ignition of the combustion device or the process of heating water by the combustion device. If the combustion device is in an unstarted state at the previous moment, the operation of the combustion device at the next moment may be understood as the ignition of the combustion device, so that the combustion device starts to heat the passing water. If the combustion device is already in the working state at the previous moment, the operation of the combustion device at the next moment may be understood as maintaining the operation of the combustion device and continuously heating the water.

[0057] Specifically, in a specific embodiment, the process of ignition of the combustion device is described as an example. Before the gas water heater starts ignition, the controller compares the required value of the minimum water flow determined in the above steps with the actual water inlet flow detected in real time by the water flow sensor. When the actual water inlet flow is greater than or equal to the required value of the minimum water flow, the combustion device of the gas water heater is controlled to perform an ignition action, that is, to start ignition. Furthermore, during the ignition of the gas water heater, the temperature sensor will detect the change of the water inlet temperature in real time. At the same time, the controller will adjust the required value of the minimum water flow in real time based on the change of the water inlet temperature, and compare the required value of the minimum water flow determined most recently with the actual water inlet flow. When the actual water inlet flow is greater than or equal to the required value of the minimum water flow, the combustion device is controlled to continue ignition.

[0058] In the above embodiment, the working state of the combustion device of the gas water heater is controlled based on the required value of the minimum water flow rate determined by the multi-dimensional parameters, which can prevent scalding caused by too low water flow rate when the inlet water temperature is too high, and avoid the inability to start the combustion device due to too low water flow caused by too low water pressure, thereby meeting the needs of different water use scenarios.

[0059] In one embodiment, Figure 3 As shown, the method also includes:

[0060] S302, when the actual water inlet flow rate is less than the required value of the minimum water flow rate, the combustion device is controlled to stop working.

[0061] Among them, stopping working can mean that the combustion device does not work, that is, the combustion device does not start, or it can mean that the combustion device stops working midway when it is working. Specifically, it can mean that the combustion device does not ignite or ignition is terminated during the ignition process, or it can mean that combustion does not occur or combustion is terminated during the combustion process.

[0062] Specifically, in a specific embodiment, the process of igniting the combustion device is described as an example. Before the gas water heater starts ignition, the controller compares the required value of the minimum water flow determined in the above steps with the actual water inlet flow detected in real time by the water flow sensor. When the actual water inlet flow is less than the required value of the minimum water flow, the combustion device of the gas water heater is controlled not to perform the ignition operation. During the ignition of the gas water heater, the temperature sensor detects the change of the water inlet temperature in real time. At the same time, the controller adjusts the required value of the minimum water flow in real time based on the change of the water inlet temperature, and compares the latest determined required value of the minimum water flow with the actual water inlet flow. When the actual water inlet flow is less than the required value of the minimum water flow, the combustion device is controlled to stop ignition.

[0063] In the above embodiment, by comparing the required value of the minimum water flow rate based on the actual water inlet flow rate before the gas water heater is started and ignited, it is controlled whether the combustion device needs to stop working, thereby further meeting the needs of different water use scenarios.

[0064] In one embodiment, Figure 4 As shown, the method also includes:

[0065] S402, obtaining the maximum heat load or maximum hot water production of the gas water heater;

[0066] Among them, the meaning represented by the maximum heat load is similar to the meaning represented by the above-mentioned minimum heat load, which will not be repeated here. The maximum heat load can also be directly stored in the memory of the controller, and the controller can directly obtain it from the memory.

[0067] S404, determining a required value of a maximum water flow rate according to a preset water outlet temperature and water inlet temperature, and a maximum heat load or a maximum amount of hot water produced; the required value of the maximum water flow rate is used to represent the required value of the maximum water flow rate that meets the preset water outlet temperature under the maximum heat load or the maximum amount of hot water produced;

[0068] The required value of the maximum water flow rate has a similar meaning to the required value of the minimum water flow rate in the above embodiment, and will not be described in detail here. The required value of the maximum water flow rate is specifically obtained by the following calculation formula:

[0069] L max =Q max *25 / 2 / (T s -T in )

[0070] Among them, L max is the required value of the maximum water flow, Q max is the maximum heat load, T s is the preset water outlet temperature, T in is the inlet water temperature.

[0071] Or, when the maximum heat load is replaced by the maximum hot water production, it is:

[0072] L max =M max *25 / (T s -T in )

[0073] Among them, M max Maximum hot water production.

[0074] S406, when the actual water inlet flow rate is greater than or equal to the required value of the maximum water flow rate, an alarm signal is output to the display screen of the gas water heater, and the alarm signal is used to drive the display screen to display the alarm information.

[0075] Among them, the alarm information may include a reminder message that the water outlet temperature is too low and a reminder message to reduce the water flow.

[0076] In the above embodiment, when the actual water inlet flow rate is greater than or equal to the required value of the maximum water flow rate, an alarm message is displayed on the display screen of the gas water heater to remind the user that the current water flow rate is too large, and the water outlet temperature is too low to reach the preset water outlet temperature. For example, in winter, the water inlet temperature is generally low. At this time, if the actual water inlet flow rate is greater than the required value of the maximum water flow rate determined in the above embodiment, the actual water outlet temperature of the gas water heater will never meet the preset water outlet temperature, that is, even if the combustion device of the gas water heater works at maximum power, its actual water outlet temperature will never reach the preset water outlet temperature. At this time, an alarm message is displayed on the display screen to remind the user that the current water flow rate is too large and the water flow rate needs to be reduced so that the actual water outlet temperature meets the preset water outlet temperature, thereby making the gas water heater more intelligent.

[0077] In one embodiment, Figure 4 As shown, when the actual water inlet flow rate is greater than or equal to the required value of the maximum water flow rate, after the step of outputting an alarm signal to the display screen of the gas water heater, the method includes:

[0078] S408, when the actual water inlet flow rate is less than the required value of the maximum water flow rate, output a stop alarm signal to the display screen, and the stop alarm signal is used to drive the display screen to stop displaying the alarm information.

[0079] Specifically, during the ignition or combustion process of the gas water heater, when the actual water inlet flow rate is less than the required value of the maximum water flow rate, a stop alarm signal is output to the display screen to drive the display screen to stop displaying the alarm information, thereby avoiding the user experience being affected by continuous alarms. At the same time, it can also prevent the user from misoperating due to the actual water outlet temperature being too high, causing burns, if the actual water inlet flow rate is less than the required value of the maximum water flow rate and the alarm is still sounded.

[0080] In one embodiment, Figure 5 As shown, the method also includes:

[0081] S502, when the combustion device is working, if the absolute value of the difference between the preset water outlet temperature and the water inlet temperature is less than the preset threshold value, a prompt signal is output to the display screen of the gas water heater; the prompt signal is used to drive the display screen to display a prompt message for increasing the water inlet volume.

[0082] The meaning of the combustion device operation is similar to that in the above embodiment and will not be repeated here. The preset threshold refers to the absolute value of the temperature difference. For example, in a specific embodiment, the preset threshold may refer to 1°C. It should be noted that the above preset threshold may be adaptively adjusted according to different application scenarios and is not limited here.

[0083] Specifically, Figure 6 As shown in the figure, it can be seen that the higher the inlet water temperature, the higher the outlet water temperature. Further, based on the above: L min =Q min *25 / 2 / (T s -T in ) we can see that, substituting the minimum heat load Q min The preset water outlet temperature is T s When the temperature is 45℃, we can get Figure 7The relationship curve between water flow and water inlet temperature is shown. As can be seen from the figure, in order to ensure that the actual outlet water temperature of the gas water heater is equal to the preset outlet water temperature, the higher the inlet water temperature, the greater the required water flow; the lower the inlet water temperature, the smaller the required water flow. However, when the inlet water temperature is closer to the set temperature, the required water flow will increase exponentially. If the inlet water flow can reach the required value of the minimum water flow before starting, the effect of preventing scalding will be better. After all, the minimum heat load of a water heater is fixed. The higher the inlet water temperature, the higher the outlet water temperature, and the higher the possibility of scalding. Therefore, based on the above reasons, by comparing the absolute value of the difference between the preset outlet water temperature and the inlet water temperature with the preset threshold, when the absolute value of the difference is less than the preset threshold, the prompt message of increasing the water inlet is displayed on the display screen to ensure that the actual outlet water temperature of the gas water heater is equal to the preset outlet water temperature and avoid scalding.

[0084] In one embodiment, the method further comprises:

[0085] Step 1: When the actual water inlet flow rate is greater than or equal to the required value of the maximum water flow rate, an alarm signal is output to the sound alarm of the gas water heater. The alarm signal is also used to drive the sound alarm to emit an alarm prompt sound.

[0086] Step 2: When the actual water inlet flow rate is less than the required value of the maximum water flow rate, a stop alarm signal is output to the sound alarm. The stop alarm signal is also used to drive the sound alarm to stop emitting an alarm tone.

[0087] In the above embodiment, through the combination of a sound alarm, the user is further reminded of the current state of the gas water heater, including the outlet water temperature and the inlet water flow rate, to avoid the situation where the outlet water temperature is too low when the user is in use, making the gas water heater smarter.

[0088] In one embodiment, a gas water heater is provided, comprising: a combustion device, a water flow sensor, a temperature sensor and a controller. The water inlet end of the combustion device is connected to the water inlet pipe, and the water outlet end of the combustion device is connected to the water outlet pipe; the water flow sensor is installed on the water inlet pipe to detect the actual water inlet flow; the temperature sensor is installed on the water inlet pipe to detect the water inlet temperature; the controller comprises a memory and a processor, the memory stores a computer program and a preset water outlet temperature, the processor is respectively connected to the combustion device, the water flow sensor and the temperature sensor, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0089] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0090] Based on the same inventive concept, the embodiment of the present application also provides a gas water heater control device for implementing the gas water heater control method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more gas water heater control device embodiments provided below can refer to the limitations of the gas water heater control method above, and will not be repeated here.

[0091] In one embodiment, Figure 8 As shown, a gas water heater control device is provided, comprising:

[0092] The data acquisition module 802 is used to obtain the preset water outlet temperature, water inlet temperature and actual water inlet flow rate of the gas water heater, as well as the minimum heat load or the minimum hot water production.

[0093] Determination module 804 is used to determine the required value of the minimum water flow rate based on the preset water outlet temperature and water inlet temperature, as well as the minimum heat load or the minimum hot water production; the required value of the minimum water flow rate is used to characterize the required value of the minimum water flow rate that meets the preset water outlet temperature under the minimum heat load or the minimum hot water production.

[0094] The operation control module 806 is used to control the operation of the combustion device of the gas water heater when the actual water inlet flow rate is greater than or equal to the required value of the minimum water flow rate.

[0095] In one embodiment, the gas water heater control device further includes:

[0096] The stop control module is used to control the combustion device to stop working when the actual water inlet flow rate is less than the required value of the minimum water flow rate.

[0097] In one embodiment, the gas water heater control device further includes:

[0098] The parameter acquisition module is used to obtain the maximum heat load or maximum hot water production of the gas water heater.

[0099] The water flow determination module is used to determine the required value of the maximum water flow according to the preset water outlet temperature and water inlet temperature, as well as the maximum heat load or the maximum hot water production; the required value of the maximum water flow is used to characterize the required value of the maximum water flow that meets the preset water outlet temperature under the maximum heat load or the maximum hot water production.

[0100] The working control module is used to control the operation of the combustion device of the gas water heater when the actual water inlet flow rate is greater than or equal to the required value of the maximum water flow rate.

[0101] In one embodiment, the gas water heater control device further comprises:

[0102] The alarm information output module is used to output an alarm signal to the display screen of the gas water heater when the actual water inlet flow rate is greater than or equal to the required value of the maximum water flow rate. The alarm signal is used to drive the display screen to display the alarm information.

[0103] In one embodiment, the alarm information output module further includes:

[0104] The signal output module is used to output a stop alarm signal to the display screen when the actual water inlet flow rate is less than the required value of the maximum water flow rate. The stop alarm signal is used to drive the display screen to stop displaying the alarm information.

[0105] In one embodiment, the gas water heater control device further comprises:

[0106] The prompt information output module is used to output a prompt signal to the display screen of the gas water heater when the combustion device is working and the absolute value of the difference between the preset water outlet temperature and the water inlet temperature is less than the preset threshold value; the prompt signal is used to drive the display screen to display a prompt message for increasing the water inlet volume.

[0107] Each module in the above-mentioned gas water heater control device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0108] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Fig. 9As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a gas water heater control method is implemented. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0109] Those skilled in the art will understand that Fig. 9 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0110] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0111] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0112] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0113] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0114] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0115] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the present application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A gas water heater control method, characterized in that: The method comprises: Obtaining the preset water outlet temperature, water inlet temperature and actual water inlet flow rate of the gas water heater, as well as the minimum heat load or the minimum hot water production; the minimum heat load and the minimum hot water production are both used to characterize the minimum hot water production capacity of the gas water heater; Determine a required value of a minimum water flow rate according to the preset water outlet temperature and the water inlet temperature, as well as the minimum heat load or the minimum hot water production; the required value of the minimum water flow rate is used to characterize the required value of the minimum water flow rate that meets the preset water outlet temperature under the minimum heat load or the minimum hot water production; When the actual water inlet flow rate is greater than or equal to the required value of the minimum water flow rate, the combustion device of the gas water heater is controlled to operate.

2. The method according to claim 1, characterized in that The method further comprises: When the actual water inlet flow rate is less than the required value of the minimum water flow rate, the combustion device is controlled to stop working.

3. The method according to claim 1, characterized in that The method further comprises: Obtaining the maximum heat load or maximum hot water production of the gas water heater; Determine a required value of a maximum water flow rate according to the preset water outlet temperature and the water inlet temperature, and the maximum heat load or the maximum hot water production; the required value of the maximum water flow rate is used to characterize the required value of the maximum water flow rate that meets the preset water outlet temperature under the maximum heat load or the maximum hot water production; When the actual water inlet flow rate is greater than or equal to the required value of the maximum water flow rate, an alarm signal is output to the display screen of the gas water heater, and the alarm signal is used to drive the display screen to display the alarm information.

4. The method according to claim 3, characterized in that: After the step of outputting an alarm signal to the display screen of the gas water heater when the actual water inlet flow rate is greater than or equal to the required value of the maximum water flow rate, the method includes: When the actual water inlet flow rate is less than the required value of the maximum water flow rate, a stop alarm signal is output to the display screen, and the stop alarm signal is used to drive the display screen to stop displaying the alarm information.

5. The method according to claim 1, characterized in that The method further comprises: When the combustion device is working, if the absolute value of the difference between the preset water outlet temperature and the water inlet temperature is less than a preset threshold, a prompt signal is output to the display screen of the gas water heater; the prompt signal is used to drive the display screen to display a prompt message for increasing the water inlet volume.

6. The method according to claim 4, characterized in that The method further comprises: When the actual water inlet flow rate is greater than or equal to the required value of the maximum water flow rate, outputting the alarm signal to the sound alarm of the gas water heater, wherein the alarm signal is also used to drive the sound alarm to emit an alarm tone; When the actual water inlet flow rate is less than the required value of the maximum water flow rate, the stop alarm signal is output to the sound alarm, and the stop alarm signal is also used to drive the sound alarm to stop emitting the alarm prompt tone.

7. A gas water heater control device, characterized in that: The device comprises: A data acquisition module, used to obtain the preset water outlet temperature, water inlet temperature and actual water inlet flow rate of the gas water heater, as well as the minimum heat load or the minimum hot water production; the minimum heat load and the minimum hot water production are used to characterize the minimum hot water production capacity of the gas water heater; A determination module, configured to determine a required value of a minimum water flow rate according to the preset water outlet temperature and the water inlet temperature, and the minimum heat load or the minimum hot water production; the required value of the minimum water flow rate is used to characterize the required value of the minimum water flow rate that satisfies the preset water outlet temperature under the minimum heat load or the minimum hot water production; The operation control module is used to control the combustion device of the gas water heater to operate when the actual water inlet flow rate is greater than or equal to the required value of the minimum water flow rate.

8. A controller comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A gas water heater, characterized in that: include: A combustion device, wherein the water inlet end of the combustion device is connected to the water inlet pipe, and the water outlet end of the combustion device is connected to the water outlet pipe; A water flow sensor is installed on the water inlet pipe, and the water flow sensor is used to detect the actual water inlet flow; A temperature sensor is installed on the water inlet pipe, and is used to detect the water inlet temperature; The controller comprises a memory and a processor, wherein the memory stores a computer program and a preset water outlet temperature, and the processor is respectively connected to the combustion device, the water flow sensor and the temperature sensor, and the processor implements the steps of the method described in any one of claims 1 to 6 when executing the computer program.

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